Click on a day for an hourly weather forecast
The temperatures in Montpelier in September are usually low and can range between 10°C and 20°C.
You can expect about 3 to 8 days of rain in Montpelier during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Montpelier in September 2025.
If you’re planning to visit Montpelier in the near future, we highly recommend that you review the 14 day weather forecast for Montpelier before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -4° / -13° | 12 | 13 | 6 | 68 mm | Awful | Montpelier in January |
| February | -3° / -12° | 11 | 10 | 7 | 74 mm | Awful | Montpelier in February |
| March | 2° / -7° | 10 | 14 | 7 | 81 mm | Awful | Montpelier in March |
| April | 9° / 0° | 10 | 16 | 3 | 106 mm | Awful | Montpelier in April |
| May | 18° / 7° | 10 | 21 | 0 | 118 mm | Ok | Montpelier in May |
| June | 22° / 11° | 10 | 20 | 0 | 153 mm | Ok | Montpelier in June |
| July | 25° / 14° | 11 | 20 | 0 | 135 mm | Good | Montpelier in July |
| August | 24° / 14° | 9 | 22 | 0 | 115 mm | Good | Montpelier in August |
| September | 20° / 10° | 6 | 24 | 0 | 105 mm | Good | Montpelier in September |
| October | 13° / 4° | 10 | 21 | 1 | 137 mm | Bad | Montpelier in October |
| November | 5° / -3° | 10 | 16 | 4 | 86 mm | Awful | Montpelier in November |
| December | -1° / -8° | 13 | 11 | 7 | 97 mm | Awful | Montpelier in December |